Book Image

Quantum Computing with Silq Programming

By : Srinjoy Ganguly, Thomas Cambier
Book Image

Quantum Computing with Silq Programming

By: Srinjoy Ganguly, Thomas Cambier

Overview of this book

Quantum computing is a growing field, with many research projects focusing on programming quantum computers in the most efficient way possible. One of the biggest challenges faced with existing languages is that they work on low-level circuit model details and are not able to represent quantum programs accurately. Developed by researchers at ETH Zurich after analyzing languages including Q# and Qiskit, Silq is a high-level programming language that can be viewed as the C++ of quantum computers! Quantum Computing with Silq Programming helps you explore Silq and its intuitive and simple syntax to enable you to describe complex tasks with less code. This book will help you get to grips with the constructs of the Silq and show you how to write quantum programs with it. You’ll learn how to use Silq to program quantum algorithms to solve existing and complex tasks. Using quantum algorithms, you’ll also gain practical experience in useful applications such as quantum error correction, cryptography, and quantum machine learning. Finally, you’ll discover how to optimize the programming of quantum computers with the simple Silq. By the end of this Silq book, you’ll have mastered the features of Silq and be able to build efficient quantum applications independently.
Table of Contents (19 chapters)
Section 1: Essential Background and Introduction to Quantum Computing
Section 2: Challenges in Quantum Programming and Silq Programming
Section 3: Quantum Algorithms Using Silq Programming
Section 4: Applications of Quantum Computing

Quantum logic gates

This is one of the most important sections. We discuss all the quantum logic gates that will be later used to construct quantum circuits. We will see the programming aspects of these quantum gates in Chapter 6, Silq Programming Basics and Features.

One of the most important properties of quantum logic gates is that they are all unitary, which means they are reversible and there is no loss of information. All the gates preserve the complex vector space transformations, which means if you apply a rotation in the X axis of the Bloch sphere to reach the state |1> from |0>, then the complex conjugate of the gate will help you to reverse the transformation that you did to the Bloch sphere, which means you will return to state |0>. This means there is no loss of information, and from the output of the quantum gates you will be able to find out the inputs as well.

Since we now know the fundamental difference between quantum gates and classical gates, let...